To 3.2 meters long and 4.8 meters wide living room floor tiles. There are two kinds of square tiles on the market with side length of 60 cm and 80 cm. Which one is suitable?

I've calculated that 80 cm is more economical, and 80 cm visually shows that your living room is bigger

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1. To the length of 6.4 meters. 4 meters wide rectangular living room floor tiles. There are two kinds of square tiles on the market with side length of 60 cm and 80 cm. Which one is suitable?
2. Dad wants to pave the floor tiles for the living room. If you choose the floor tiles with 60cm side length, you need 125 pieces. 1. How many pieces do you need if you use the floor tiles with 100cm side length
3. Xiao Ming's living room, which is 6 meters long and 4.5 meters wide, needs to be paved with floor tiles. There are 40 cm and 30 cm floor tiles. Which one is suitable? How much
4. Dad paves the floor tiles for the living room. If you choose a floor tile with a side length of 40cm, you need 125 pieces. If you use a floor tile with a side length of 50cm, how many pieces do you need? How to solve it
5. Decoration workers to a house floor tile, if the side length of 40cm square brick shop, need 300. If the side length of 50cm square brick, how much
6. If you use 40cm square tiles, you need 300 pieces. If you use 50cm tiles, how many pieces do you need? (using the method of solving proportion) there are 161 meters of ribbons. First, you use 21 meters to make 12 wreaths. According to this calculation, how many more wreaths can you make for the remaining ribbons? (using the method of solving proportion)
7. The area of study is 16 square meters, used 32 floor tiles, ask the area of each floor tile is how many?
8. Lingling's study area is 16m2, and 32 floor tiles are used. How much is the area of each floor tile?
9. The area of Lingling's study is 16 square meters, and 32 floor tiles are used. How many floor tiles should be used per square meter
10. Who uses concise words to give me the equivalent series of this problem? Lelejia study covers an area of 16 square meters and uses 32 bricks. What is the area of each brick? List the equivalent relationship!
11. Four identical rectangular floor tiles and a square floor tile with a side length of 60cm are laid into one side Four identical rectangular floor tiles and a square floor tile with a side length of 60cm are laid into a large square with a side length of 80cm, and the length sum of the rectangular floor tiles is determined
12. To pave a room with floor tiles, if you use 60 cm square bricks, you need 350 pieces. If you use 1 m square bricks, how many pieces do you need?
13. The area of floor tile is fixed. Who changes the area of floor tile and the number of tiles? Original question: the area of the bottom of the house remains unchanged, and the number of tiles is inversely proportional to the area of each tile
14. If a room is paved with 16 square centimeter square bricks, it needs at least 150 pieces. If it is paved with 5 cm square bricks, how many pieces at least (answer with comparison)
15. Mr. Li's new house is decorated. The living room is ready to be paved with floor tiles. The area and quantity of floor tiles are as follows, Area of each floor tile / m2: 0.20.30.40.60.8 Number of floor tiles required: 600 400 300 200 150 1. If the area of each floor tile is 0.5 square meters, how many floor tiles do you need to pave the living room? (write the formula) 2. 500 bricks were used for this living room. What is the area of each brick? (write the formula)
16. In a room with an area of 21 square meters, the floor tile is 2 / 5m in length and 3 / 10m in width. How many bricks do you need to fill the room?
17. The floor of the room is a rectangle, 5 meters long and 4 meters wide. How many tiles are needed to lay 40 cm long and 25 cm wide? How much?
18. A room is 40 decimeters long and 32 decimeters wide. How many such tiles do you need to lay the largest square tiles on the floor?
19. A conference room is 52 decimeters long and 36 decimeters wide. Now it needs to be paved with square tiles. How many decimeters is the minimum side length of the tiles? How many tiles do you need?
20. Xiaofang's bedroom is 3.6m long and 2.8m wide. Now we need to lay square tiles. What is the maximum side length of square tiles? How many decimeters do we need